Rotary perforating-machine



(NoModel.)

2 Sheets-Sheet 1.

E. B. STIMPSON J1. ROTARY PBRPORATING MACHINE.

llllullln Patented Dec. 21, 1886.'

Mini/57565.

N. PETERS, Plwin-Lilhogmpher. Washington. D. (Iy

(No Model.) 2 sheets-' sneef 2. E. B. STIMPSON, J1'.

ROTARY PERFORTI'NG MACHINE..

No. 354,665. Patented 13.00.21, 1886..

IPG/Messes.

N. PETERSV Phnlu-ljlhogmpller. Wnshlnglun, D. C.

i UNI-TED STAT-Es 'PATENT arten.

EDWIN B. STIMPSON, JR., OF BROOKLYN, NFV -YORK.

ROTARY PERFORATl-NG-MACHINE.

SPECIFICATIONl forming part of Letters Patent No. 354,665, dated December 2l,A 1886.

` Application-filed March 19, 1886, Serial No. 195,786. (No model.)

chines may be advantageously used for perforating check-books or otherl papers.

My invention relates to machines in which are employed ay rotary punch-holder and a rotary die, each composed of two disks or sections secured fast face to face upon ashaft, the punches-,being clamped and held between the disks or sections of the punch holder or carrier, and the dieopenings, in connection with which the punches operate, being formed by radial grooves in the face ofone of thediesections.

The object of my invention is to provide for the inexpensive construction of the punchholder and die, and also to provide a construction which will be particularly adapted for very small thin punches and correspondinglysmall die-openings; also to provide a rotary die of the kind above described, which may be secured upon a solid shaft, and is provided with an internal cavity external to the shaft, and lateral openings leading therefrom for the passage of the scraps produced in punching.

In the accompanying drawings, Figure l is .a front elevation of a machine embodying my invention. Fig. 2 is an end elevation thereof. Fig. 3 is an axial section through the punchholder and the die, including portions of the 4o shafts on which they are secured. Figs. 4t and 5 are respectively face views of the two disks f or sections which constitute the punch holder or carrier; and Figs. 6 and 7 are face views,

respectively, of the two sections or disks which compose the die. Figs. 1 and 2 are on a smaller scale than the remaining figures.

Similar letters of reference designate correspending parts in all the figures.

My present invention relates solely to the 5o construction of the punch-holder and die,and

the other parts of the machine, in which the punch-holder and die aresupported, and by whichthey are operated, may be of any suitable construction.

A B designate upper andlower shafts, upon connected by suitable stretchers, or to a suitv able bed. The journals of the lower shaft, B, are fitted to bearings in the side frames, C, while the journals of the upper shaft, A, are tted in boxes c, which are movable upward and downward in yokes or housings con the 7o side frames, C, and which are acted upon by springs a', for elevating them so as to remove the shaft A and its punch-holder from operating relation to the shaft B and the die. Above the shaft A is a smaller shaft, b, having upon its ends cams b', which act upon the boxes c, and also provided with an operatinghandle, bwhereby the shaft and cams may be turned. Vhen the shaft b is turned so as to bring the cams b to the position vshown/in Fig. 8o 2, the boxes a will be held down in theirlowest position and the parts of the machine will be in suitable position for operation. When the shaft or rod bis turned so as to retract the cams from the boxes @,the springsowill raise 8 5 said boxes, and with them the shaftA and the punch-holder. The two shafts A B are here shown as geared together by pinions b3, and the lower shaft, B, is provided with a wheel,

if, with which engages a pinion, b5, driven by 9o a pulley, b.

.I will now particularly describe the construction of the punch-holder and die.

d designates the series of punches, and the holder is composed of two principal parts or sections, D D. This punch-holderis intended to carry punches of considerable width, but very little thickness, and for many kinds of work I'nd it advantageous to employ for the punches the ordinary spring-steel which is roo used for the bow-springs of eyeglasses. In

4the face of the section D, I haveshown a circular groove, d', and the portion of the face which is outside or beyond said circular groove has formed in it radial grooves, cl2, which receive the punches d. The part or section D of the punch-holder has upon its face a circular tongue or flange, d, which enters the circular groove d', and whichforms a circular shoulder or abutment, against which the inner ends of the punches d bear. The two parts D D of the punchholder may be held tightly together face to face, and clamping the punches between them by means of screws d, any number of which may be employed. The formation of the radial grooves d2 in the section D provides for and after the punches are all in place, with their inner ends pushed in against the shoulder formed by the tongue or flange cl3, the screws d* may be tightened to firmly clamp the sections D D together. If any one of the punches be broken at any time, it can be, at a trifling expense, removed and a new punch substituted.

The die here shown is composed, essentially, of two sections or disks, E E, which are clamped together by screws e, and which have die-openings formed by radial grooves in the face of one of them-in this example in the part E. The section `E has at the edge a iiange, e', projecting from its face, and this Bange has formed in it the radial grooves e2, which, when the disk or section E is clamped against it, form the die-openings for the reception of thepunches d. The portion of the face of the section E which is depressed below the ange e forms, when the sections are secured together, an internal cavity, which is external to the shaft, and on the face of Athe sectionE are formed projections e3, which are approximately flush with said flange, and against which the face of the section E bears. The section E has formed in it perforations or holes e, which,

when the section is clamped to the section E,

come between the projections e3 thereon and form openings, through which the scrap or punchings may escape from the hollow die.

Vhat I claim as iny invention, and desire to secure by Letters Patent, is

1. The combination, with a rotary die, of a series of punches and a rotary punchholder composed of two disks or sections clamped together side by side, one of said sections having radial grooves in its face for the reception of the punches, and one of said sect-ions having a circular shoulder underlying the inner ends of the grooves and forming a fixed abutment for the inner ends of the punches, substantially as herein described.

2. The combination, with a rotary die, of the punches d and the rotary punch-holder composed of the sections D D', clamped together, the section D having in its face the circular groove d' and the grooves d, extending radially from the groove d to the circumference of the section, and the section Dhaving a circular tongue or ange, d, which enters the groove d', and by underlying the inner ends vof the radial grooves d2, forms an abutment for the inner ends of the punches, substantially as herein described.

3. The combination, with a rotary'punchholder and punches, of a shaft and a rotary die secured thereon, and composed of two disks or sections arranged side by side and constructed to form between them an internal cavityw'hich is external to the shaft, one of said disks or sections having in its face radial grooves leading inward to the internal cavity and forming die-openings, and one of said disks or sections having lateral openings leading from the internal cavity, substantially as. herein described.

4. The combination, with the rotary punchholder and punches, of a shaft and a rotary die secured thereon, and composed 0f two disks or sections arranged side by side, one section, E, havingatlange, e', projecting from its face at the circumference and provided with radial grooves e, and having the portion within the flange depressed below the face of the ange, so as to form between the disks or sections an internal cavity which is external to the shaft, and the other section, E', having lateral openings c" leading from said cavity, substantially as herein described.

5. The combination, with a rotary punchholder and punches, of a rotary die composed of the sections E E', clamped side by side, thel section E having the flange e', which is grooved radially, and also having the projections es flush with said flange, and the section E having the openings e, for the escape of scrap, substantially as herein described.

EDWIN B. STIMPSON, JR.

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